<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <link type="text/css" href="../style/bootstrap/css/bootstrap.css">
    <script src="../js/vue.js">
    </script>
    <script src="../js/jquery.js">
    </script>
    <script>
        $(document).ready(function () {
            var btnStyle=$("button").html()
            console.log("$方法获取html->"+btnStyle);
        })
    </script>
</head>
<body>
    <div id="app">
        <button class="btn btn-default" name="bu">
            <b>这是$还是Dom对象</b>
        </button>
    </div>
    <script>
        var btn=document.getElementsByName("bu");
        console.log("DOM方法获取html->"+btn.innerHTML);
    </script>
</body>
</html>